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MidOpt LP Series – LP286 Protective Window

Uniforce Product

Salient Features

LP286 Borofloat® Oleophobic VIS A/R Coated Protective Window

LP286 protective filter graph

LP286 windows are made with high-impact, thermal-resistant Borofloat®, which is transparent in the near-UV, visible, and near-infrared ranges. It has a very low coefficient of thermal expansion and high shock resistance, withstanding temperatures up to 450° C for extended periods of time. Borofloat® is resistant to staining and harsh chemicals such as acids or alkalis, making it the protective window of choice when an economical window is needed for use in a harsh, high temperature environment. MidOpt LP286 windows have a rugged multi-layer, broadband anti-reflection coating to limit reflection loss in the visible and near-infrared spectrums. These windows are also available with an oleophobic (anti-smudge) coating to resist oils and moisture build-up, allowing for much easier cleaning.

LP286_Trans_Graphic filter

  • Useful Range : 350-1100nm
  • Cut-on Wavelength 50% T : 340nm
  • Tolerance : +/- 10nm
  • Peak Transmission : ≥98%
  • Surface Quality : 40/20

Protective Filters are designed to shield your lens and lighting from dirt, dust, liquids, impact and harsh environments without sacrificing image quality.

  • Economical solution to protect expensive lenses
  • Useful for imaging in ultraviolet (UV), visible (VIS) and near-infrared (NIR) spectrums
  • Available with a high-efficiency, anti-reflection coating to maximize transmission to 98% or more
  • Offered in both glass and acrylic
  • Exceptional surface quality; 40/20 scratch/dig





MidOpt StablEDGE™ optical filters are specifically designed to be less  susceptible to effects from angular shifting seen when optical filters are placed in front of short focal length (<12 mm) camera lenses.
StablEDGE™ filters take advantage of absorptive filter glass to form the leading
edge of the filter passband.This assures no shifting in this region, even when the
lens FOV exceeds 100°.StablEDGE™ designs are  less angle-of-incidence sensitive, inherently more rugged, and are environmentally stable.



MOUNT & SIZE OPTIONS: In-stock, ready-to-ship Protective Filters are available in Threaded Mounts, sizes M13.25 to M105; 25.4® C-Mount; Slip Mounts; or Unmounted. Custom shapes and sizes are available.

Learn More About

> Learn More About How to Minimize the Effects of Short Shifting

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Fused Silica Protective Window LP286

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